TOPRAN 503 131 Drive Pulley Bolt

Compatible with BMW 3 (E36) , BMW 3 Compact (E36) , BMW 3 Touring (E36) Show more info
Securely fastens the drive pulley to the engine. Ensures proper alignment and reliable operation of accessory systems.
13.21 EUR
inc. VAT 21%
In stock 1
Delivery 1 day (23.03.2026)
PN 503131
Make TOPRAN

This drive pulley bolt from TOPRAN is designed to meet the specific requirements of your vehicle's engine. It plays a critical role in maintaining the correct position and tension of the drive pulley, which is essential for the smooth operation of various engine accessories such as the alternator, power steering pump, and air conditioning compressor. Crafted from durable materials, this bolt offers resistance to vibration and stress, ensuring a long service life and dependable performance under demanding engine conditions. Proper installation of this bolt is key to preventing pulley slippage and accessory system malfunctions, contributing to overall vehicle reliability.

  • Direct fit for specific vehicle applications
  • High-quality material construction for durability
  • Resistant to vibration and engine stress
  • Ensures secure mounting of the drive pulley
  • Critical for accessory system functionality
  • Meets or exceeds original equipment specifications
  • Designed for reliable and long-lasting performance
Thread size
M 18
Thread pitch [mm]
+15
Overall length [mm]
134
Bolt/Nut Design
with flange
Thread length [mm]
102
Strength class
10.9
Screw head/nut profile
External hexagon
Wrench size
2+2
  • BMW
    • 3 (E36)
      • 318 tds (66kW/90PS)
    • 3 Compact (E36)
      • 318 tds (66kW/90PS)
    • 3 Touring (E36)
      • 318 tds (66kW/90PS)
    • 3 (E46)
      • 320 d (100kW/136PS)
      • 318 d (85kW/116PS)
    • 3 Touring (E46)
      • 320 d (100kW/136PS)
      • 318 d (85kW/115PS)
    • 5 (E39)
      • 520 d (100kW/136PS)
    • 5 Touring (E39)
      • 520 d (100kW/136PS)
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